Follow this guide to upgrade your A8’s firmware to the latest, and safest, version of Marlin. https://www.youtube.com/watch?v=2uX5_rI1QM8

Anet, as well as other manufacturers of inexpensive 3D printers, disabled a critical safety feature in their firmware. What is Thermal Runaway Protection and how can you enable it on your 3D printer to avoid a costly critical breakdown?

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